Retaining means for concrete pouring forms



S. S. COLT Nov. 28, 1933.

' RETAINING MEANS FOR CONCRETE POURING FORMS Filed June 30, 1935 INVENTOR Aggy/r2116] 6. (M if.

ATTORNEY Patented Nov. 28, 1933 UNITED STATES RETAINING MEANS FOR CONCRETE POURING FORMS.

This invention relates to improvements in rea taining means for concrete pouring forms; and the invention has reference, ,more particularly,

to means for retaining spaced form walls or.

I similar form parts in position and firmlybraced subject to the pouring of concrete thereinto.

This invention has for its principal object to provide in combination with form supporting and tying means, a novel, inexpensive and efiicient external keeper. means for locking up the form supporting and tying means in assembled relation to the form Wall structure; and the invention has for a more specific object to provide an external keeper means capable of cooperative use with ordinary machine nuts as applicable to the external end members of the form supporting and tying means; in this latter connection, the invention has for a further object to provide a keeper means wherein the base flange is strongly reenforced by a novel arrangement of reenforcing elements integral therewith, so that a mini-. mum weight of metal is required to provide a keeper means of great strength and durability, with the result that the cost of production of the keeper means may be brought down to a minimum.

Other objects of this inventiornnot at this time more particularly enumerated, will be understood from the following detailed description of the same.

Illustrative embodiments of this invention are shown in the accompanying drawing, in which: Fig. 1 isa fragmentary transverse section taken through an external wall of aic'oncrete pouring form, and showing in one form, in'combination with the supporting andtying means therefor, the novel external keeperme'ans of'this inventionj Fig. 2 is an exteriorface view of the same;

and Fig. 3 is a fragmentary vertical section, taken on line 33 in Fig. ,2, but drawn on-an enlarged scale.

Fig. 4 is an exterior face. view of a modif ed form of the external keeper means; 'andFigiB is a vertical section thereof, taken on line 55 in I Fig. 4, but drawn on a somewhat enlarged scale.

thereof the usual uprights or battens 11 acrosswhich extend the horizontal walers 12, the latter being ordinarily arranged in pairs, the members of whichareusually spaced apart one' above the other. Y

Entered through an opening 13 provideddin the form wall 10, is a tie-rod coupler 14 having its conicalend 15 disposed'to'project into the form -interior. Said conical end i5 is internally PATENTOFFICE f threaded to operatively' engage the end ofa rod 16 which extends from the opposite wall, or' any. other part of theform, across the interior of the latter, and which serves to space the wall 10 relative to the opposite Wall or other form part, so as to hold the same against both internal collapse and external displacement. Qne or both sides of said coupler 14 are provided with guide channels} 17, preferably downwardly and inwardly inclined as shown, whereby fastening means 18, suchias nails orv staples, can be passed downwardly therethrough and driven into the form wall 10, thus not onlyholding the coupler 14 against inward or'out'ward displacement'relative to the form wall, but also holding said coupler 14 against turning about its axis'onceit.

relation to the form link-rod or bolt-shank 19, which is threaded at,

its inner end, as at 20, to screw into the outer end portion of the coupler M toproject, exteriorly therefrom, and so as to extend outwardly between the walers '12. The outerend portion of said link theuprights or battens '11, against the outer face of the form wall, thereby securely locking up the form parts and thesupporting and tying means therefor inoperative assembled relation ready to.

receive the pouring of concrete. In preferred form, the keeper means comprises an abutment flange, or plate 22 of circular or any other desired portion 23.; Centrally disposed to project from the outer face of.said abutmentflfiange or plate 221is hollow Box at of polygonal cross sectionalshape,

peripheral shape, the marginal po'rtions'of which 1 l are thickened .to' provide a peripheral reenforcing" and open'at' itsouterj'e'nd. As shown this box 24 is ofhexagonal shape to provide, atitsouterend 1 portion, a receiving chamber 25 to conform to and receive a'hexagonal machine nut 26 adapted to bescrewed upon the threads 21 at the outer end of the link rod or bolt-shank 19. It will be une derstoodthat the box 24 andits chamber 25 may be shaped to conform to other shapes of machine nuts, such e. g. as square or octagonal shapes. 'At' its inner endsaid boX' is provided interiorly with one. or more. transverse partitions 27 having smooth bore guide openings 28 to easily slide over the outer threadedend of the link-rodoribolt-j shank 19 so as to guidethe latter -into 'quicka'nd easy, threadengaging relation to a'nut 26 support ed within the chamber 25 at the outer end of the box 24. .To retain the nut 26 operatively related to. the keep'ei member. and seatedand enclosed within the holding chamber thereof, the outer;

margins of the chamber walls are provided with a plurality of clinching lugs 29 which, after the nut 26 is entered in the holding chamber 25, are turned or bent inwardly and clinched over the outer face of nut 26,'as shown; thus retaining the keeper member and nut in cooperative assembled relation. The outer contour of the box 24 con-; forms to that of the nut 26, and consequently'when the keeper member and nut are engaged and re tained together in assembled relation, the device may be easily and quickly applied to and turned a plurality of radial reenforcing ribs extend outwardly from the exterior .of the box 24 over 20'" the outer face of the flange or plate 22 to themarginal reenforcing portion 23 of the latter, these ribs 30 being integrally cast. in connection with these parts of the keeper device. The flange or plate 22 is provided at one or more points inter-, mediate the box and its periphery with nail passing" openings or perforations 31.

Inthe use of the keeper device, after the coupler 14 is in place and the link-rod or bolt-shank 19 connected therewith to project outwardly therefrom and between the walers. 12, the keeper deice with the machine nut assembled therewith, is applied to the end of the link-rod or bolt-shank 19. Owing to the provision of the smooth bore guide means at the inner end of the device, the end of the link-rod or bolt-shank 19 is led immediately into proper starting engagement with the internally threaded opening'of the machine nut 26' carried in the chamber 25 of the box 24, thus avoiding fumbling and delay in screwing on the keeper member, and also avoiding any likelihood of crossing threads with risk of injury thereto.

When the keeper means is screwed'home by hand 24so"that some slight allowance of play between the nut, and the box is possible. This is of 'con- ,side'rable importance since it allows the keeper device to accommodate itself to any inequalities in the surfaces of the walers without'tendency to cant, bent. or twist the link-rod, coupler or other parts'of the supporting'and tying means,.and consequently relieves the latter parts from undue lateral stresses and strains; After the keeper'dev'ice is set, any tendency to relax or backup on the link-rod or bolt-shank 19, and'thus loosen from its desired holding or locking relation to the form wall structure, may be prevented by driving one or'more nails 32" through the openings 31 of the abutment flange or plate 22 into the walers 12. I fThenovel keeperdevice, in the form above "described, is very inexpensive, and may be usedover and over again. It. may be made of cast metal, andrequires little or no machining, thread-cutting orlikeexpensive'operations, since it is ad'ap'te edto utilize stock machine nuts. In the event of any injury to the nut per se, it is an easy and inexpensivematter to remove the same, and re- V placewith a gocd nut." By .virtue of thenovel In practice, the machine nut 26 in connection with the flange and box of the device, the mass of metal required for the device maybe reduced to -;a minimum without sacrifice of that strength and durability requisite for the purposes intended.

R eferring to Figs. 4 and 5 of the drawing, I have shown a modified form of keeper means, which comprises an abutment flange or plate 33,

having a centrally disposed outwardly projecting boss or barrel 34. At its outer end the bore of the barrel is internally threaded at 35 to directly screw-onto the outer portion of the link-rod or bolt-shank 19. Leading into the barrel from its rear end is a smooth bore portion 36 which serves as a guide todirect the -ink-rodorbolt-shank end into starting relation .to the internally threaded portion'of the barrel. The outer contour of the barrel may be'made of any shapedesired. Riveted or otherwise; secured to'the abutment flange or plate 33 are one or more studs 3'7 spaced away from the exterior sides of the barrel. In applying this type of keeper device and thereupon tightening the same home on the link-rod or bolt shank 19, a lever member, as shown'by broken.

lines at 38, may be inserted between a side of the barrel 3'4and a stud 37, so as to be fulcrumed by the former into engagement with the latter, whereby leverage can be applied to turn the de vice on the link-rod or bolt-shank to tightly screw down the same against the walers 12; One

It will-be obvious that the outer end of the.

barrel 34 may be chambered to receivea machine nut, in the'manner set forth in the firstdescrib'ed structure, instead of providing the internal screw threads, as above mentioned.

It willals'o be obvious that'the chambered nut receiving box 24 of thefirst described' keeper means may be given a cylindrical or any other non-polygonal exterior conformation, and then studs, such. as the studs 3'7"of the second de-- scribed keeper means provided for cooperation therewith to receive actuating application of 'a lever for turningthe device relative'to the link-r rodor bolt-shank 19. I v 7 Having thus described the invention, I claim:.

1. In combination with aform retaining means including acoupler anda threadedlink-rod exteriorly projecting therefrom,- a keeper means provided with"an' abutment'fiange'and means to engage the threaded outer endof said link-rod, said keeper mean'shaving means to guide said link-rod end to the thread engaging means 2. In combinationwith a form retaining means including a coupler and a threaded link-rod ex-' terio'rly projecting therefrorma keeper mean's provided with an abutment fiangeandmeans to engage'the threadedouter end of said link rod,

teriorly' projecting therefrom, a keeper means comprising an abutment fiangaa centralbox outwardly projecting from said flange and provided at its outer end withmeans to. embrace a machinefnut, a machine nut. lodgedin said embracing means, the latter beingshaped to conform to said nut whereby turning movement is transmitted therethrough to said nut, a guide means at the inner end of said box to guide said link-rod into thread engaging relation to said nut, and means to retain said nut against displacement from said box.

4. In combination with a form retaining means including a coupler and a threaded link-rod exteriorly projecting therefrom, a keeper means comprising an abutment flange, a central box outwardly projecting from saidfiange and provided at'its outer end with means to embrace a machine nut, a machine nut lodged in said embracing means, the latter being shaped to conform to said nut whereby turning movement is transmitted therethrough to said nut, and means to retain said nut against displacement from said box. I

'5. In combination with a form retaining means including a coupler and a threaded link-rod exteriorly projecting therefrom, a keeper means comprising an abutment flange having a peripheral reenforcement, a central boxintegral with and outwardly projecting from said flange, said box having a polygonal exterior conformation and an open chamber at its outer end to conform to and receive a machine nut, a machine nut seated in said chamber, means at the outer end of said box to retain said nut against displacement from said chamber, and reenforcing ribs extending radially from said box and integrally with and across the outer side of said flange.

6. In combination with a form retaining means including a coupler and a threaded link-rod exteriorly projecting therefrom, a keeper means comprising an abutment flange having a peripheral reenforcement; a central boxintegral with and outwardly projecting from said flange,

said box havinga polygonal exterior conforma-' ribs extending radially from said box and in- J tegrally with and across the outer side of said flange, said flange having an'opening for the passage ofa; fastening means therethrough and into 1 a form wall structure. I

, 7. In combination with a form retaining means 'including'a coupler anda threaded link-'rod exteriorly projecting therefrom, a keeper means comprising an abutment flange having a peripheral reenforcement, a central boxintegral with.

and outwardly projecting from said flange, said box having a polygonal exterior conformation and box to retain said nut against displacement from said chamber, and reenforcing ribs extending radially from said box and integrally with and across the outer side of said flange, said box having open guide means at its inner end to receive and guide the exteriorthreaded end of said linkrod into thread engaging'relation-to said nut.

SAMUEL s. ,ICOLT. 

